What gas mileage are you getting? - Page 2 - Pontiac G6 Forum
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post #16 of 232 (permalink) Old 06-04-2008, 09:23 AM
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This GA SE gets low MPG. Why?



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Mike
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None, if I want a faster car I'll buy one.
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post #17 of 232 (permalink) Old 06-04-2008, 09:43 AM
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I have an 06 G6 GTP sedan with the 3.9 Auto.


I'm getting 23 in town and 27-28 on the highway and that's according to the computer(I drive like an old woman).

2006 Pontiac G6 GTP (4D)
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post #18 of 232 (permalink) Old 06-04-2008, 09:51 AM
 
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then maybe i need to start driving like an old woman.... i could really use the extra money saved from getting more mpg- lol
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post #19 of 232 (permalink) Old 06-04-2008, 05:09 PM
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23 Mpg In The G6
30 Mpg In The G5
All Stop & Go,no Hi Way Yet

07/G5,85&78 VETTE'S,,,,WIFE 08/G6
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post #20 of 232 (permalink) Old 06-05-2008, 07:15 AM
 
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Quote:
Originally Posted by TONY TAT2 View Post
23 Mpg In The G6
30 Mpg In The G5
All Stop & Go,no Hi Way Yet
That's really good for city!
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post #21 of 232 (permalink) Old 06-05-2008, 12:14 PM
 
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1,800 miles on my 08 GXP - I get about 29 hwy; 21 city. I average about 23 with mostly city driving.
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post #22 of 232 (permalink) Old 06-16-2008, 07:02 PM
 
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I have the exact same car as the original poster - a 2005 G6 GT - and I have consistently gotten 21 mpg in a mixture of city and highway driving. Could be better, but I suppose it could also be worse.
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post #23 of 232 (permalink) Old 07-03-2008, 05:31 PM
 
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I have a new 2008 G6 convertible (love the car!) with the 3.9 HO. I have 520 miles on it, and I'm getting 19 MPG in town - I'm ecstatic about 19 MPG because the sticker said 15 MPG in town.

While I don't really hot rod the car, I don't drive like a grandma either (I do drive conservative, though, most of the time).

When you folks post your MPG, please try to include engine size, so we can make better comparisons.

Thanks, and have a great 4th!!
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post #24 of 232 (permalink) Old 07-03-2008, 06:38 PM
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30-34 MPG Hwy, 3.5 ltr Sedan.




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post #25 of 232 (permalink) Old 07-04-2008, 07:31 PM
 
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I got as high as 35.7 mpg on the highway today at about 65-70 mph, 3.5L V6 (18k miles) Sedan.

I filled up the tank, reset the mpg on the radio display and hit the highway without any stops. After about 25 miles I was still getting a steady 35.7. I'll be driving down to PA tomorrow (mixed city/highway and hills), I'll post what I get.
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post #26 of 232 (permalink) Old 07-05-2008, 03:01 PM
 
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WOW! 35.7 for a 3.5 by GUNIA is awesome. I drove about 25 straight highway miles after a fill up today, and got 25 MPG from my 3.9.

BTW, I have the 4 speed auto. I would assume that the 6 speed auto would do even better, but GM decided not to do that to keep the price of the convertible as something we common folks could afford.
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post #27 of 232 (permalink) Old 07-06-2008, 06:06 AM
 
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Ok came back from my little trip. Total miles 342.5. The radio display reads 30.1 mpg. I calculated 28.1 mpg. There is a little discrepancy, could be the method I use, but even a worst case average of 28 mpg is great.

The trip was about 70% highway (60-70 mph), 30% local (30-45 mph, lots of traffic lights, hills, no bumper to bumper traffic).

I was also using a fuel system cleaner during this trip, but I doubt that had an effect on the mpg.

I didn't check the tire pressure, but I usually have it at 33-34 psi. Engine oil and air filter was changed recently.
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post #28 of 232 (permalink) Old 07-06-2008, 06:13 AM
 
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Quote:
Originally Posted by g6_convertible View Post
WOW! 35.7 for a 3.5 by GUNIA is awesome. I drove about 25 straight highway miles after a fill up today, and got 25 MPG from my 3.9.
I still get 28 mpg with mostly highway driving in my Impala (3.8L V6). I did get an average as high as 32 mpg. The 3.9 obviously has more power, but might also have more aggressive gearing. Also if you have larger rims, that adds additional weight to rotate...not to mention the additional weight of the convertible.

Last edited by Gunia; 07-08-2008 at 01:35 PM.
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post #29 of 232 (permalink) Old 07-08-2008, 10:46 AM
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I drive like a freakin' idiot and I get 25-26.5

I have a 2006 3500
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post #30 of 232 (permalink) Old 07-10-2008, 08:46 AM
 
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I have a 2005 G6 GT with the 3.5 liter V6 and I recently got 35 mpg on a highway roadtrip. That's the best mileage I've ever gotten in this car, it has 40k miles on it, and I was pretty happy with that. It was mostly flat high desert straightaways with some rolling hills and small mountains every once in a while.

In city driving I usually get 21 mpg on the dot. Which is not so great, but certainly could be worse.

For a v6, I'm pretty happy with it and any money I spent on a hybrid would not make a large enough difference to cover the initial cost of the new car. I had been thinking of upgrading to a Prius but I will probably drive this car into the ground and then buy a small electric or hybrid in 2012 when Toyota and Honda come out with their latest hybrid technologies.

There have been a number of electrical gremlins with the G6, and the dealer experience has not been positive. Which is why I will probably get a Honda next.
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